Health Department Medical MCQs NTS Past Papers Operation Theatre Technician (OTT) Surgical Technician Glass is attacked by ____, which is used to make designs on glass by process called etching. March 18, 2025 Admin No Comments A: Hydrochloric Acid B: Hydrofluoric Acid C: Hydrobromic Acid D: Sulphonic Acid Correct Answer: b View More Details >>
